Snap-hook.



. F. E. SCHARTOW.

SNAP HOOK.

APPLICATION FILEDJUNE I9. 1915.

1,245,275. y Patented Nov. 6, 1917.

/NVENTR ATT/JHM: YE

UNITED sTATns PATENT oiiiircn.

FRANK E. SCHARTOW, OF RACINE, WISCONSIN, ASSIGNOR OF ONE-HALF-TO RU'ERT A.. NOURSE, OF MILWAUKEE, WISCONSIN.

SNAP-HOOK.

` l Application filed June 19,1915?. Serial No.35,014.

To all whom t may concern.'

Be it known that I, FRANK E. S'cHAnTow,

a citizen of the United States, and resident of Racine, in the county of Racine and State of lVisconsin, have invented new and useful Improvements in Snap-Hooks of whicli'the following is a. descriptiom reference being y'had to the accompanying drawings, which Y hooklportion is cast inan angular'position aie a part of this specification.

This invention relates to improvements in snap hooks of that type in which the hooks arefoimed of cast metaland in which the and is straightened in assembling the parts. In the manufacture kof V'snap hooks` the Vhooks are cast at an angle with relation tofy the shanks to eliminate the usey of expansive Y cores in the foundry, andthe hook portions f are then bent to aline with the' shanks. In

some forms of hookslthe Shanks are pro- 'vided with projecting lips which are bent over pivot pin portions of guard tongues to pivotally connect the tongues to the Shanks,

and in other constructions the guard tongues are, pivotedto the V.shank portions by pivot pins which are extended through holes vdrilled in the shanks andthe tongues and' the ends of the pins are riveted to the parts.

All of the parts of the hooks before being assembled are usually put into a 'tumbling barrely and tumbled to remove the rough edges and smooth the castings. During this tumbling process the proj ecting` ears are very often considerably and materially weakened to such an extent as to break while being 'bent over the tongue portions or when in use.

Furthermore in many forms of hooks the guard tongues are provided with guard portions which subject the tongues to longitudinal strains and these strains are usually borne by the` projecting lips or the pivot' pins andas these parts are comparatively weak they often break in use. Y

Furthermore during the tumbling process p some of the parts are worn to such an ex- .tent that when assembled there -is so much ,play between theparts as to Aform snap hooks ofinferior quality.

. 4 It is one of the objects of the present in-" vention to overcome the beforementioned objectionable features. and provide a snap hook in which the use of projecting pivot lips or pivot pins is eliminated.

same parts in all of the views:

A further object of the invention is to i provide a snap hook in which the necessary bending of the hook portion to alined p osition with relation to the shank serves to lock the assembled portions of the snap hook together, thus eliminating many operations necessary in other forms of hooks. A further obj ect of the invention is to provide a snap hook having means for relieving the lshank of endwise thrust against the tongue. l

A further object of the invention is to provide a snap hook which is of simple construction, is strong and durable and is well adapted for the purpose described.

With the above and vother objects in view the invention consists ofthe improved snap hook and its` parts andr combinations as set forth in the claims, and all equivalents thereof.

In the accompanying drawing in which the same .reference characters indicate the Figure 1 isa side view of the improved snap hook; v

Fig. 2 is a longitudinal,sectional view: of the hook;

Fig. 3 is a top view thereof, the view'also indicating by dotted lines the angular position of the hook before it is bent into alined `position v'with relation to the shank; and

Fig. et is a 'sectional detail view of a portion of the hook taken on line H of Fig. 2.

Referringto the drawing the numeral 8 indicates the shank, 9 the hook portion, 10 the eye and 11 the guard tongue pivotally connected to the shank. The shank portion of the hookadjacent the eye is provided with upstanding parallel side ears 12 which are joined together at their upper portions by an integral transversely extending pivot bar 13 which is of circular form in vcross section. The portion lll of the shank immediately below this pivot is openl to permit casting Without the use ofy expensive cores' and the hook portion 9, as indicated by dotted the pivotal connection of the tongue with edges of .tongue is protected by the side flanges 19 of said hook. j y

A coiled spring 2O interposed between the shank and a medial portion of the tongue serves to hold the tongue yieldingly in engagement with the hook end and the transverse pivot bar 13. The tongue yisnprovided 'with' a boss 21 which isengaged by the upper convolution of the springy and the shank is provided with a recess 22 to receive the lower end of the spring to hold said spring in position.

- As the spring is located closer to the transverse pivot bar than to the free tongue, the free end lwill naturally swing forwardly to open position, when pressed to permit the entrance of a member to be engaged by the hook. `In'swingingto open position the guard proj eotions will "swing downwardly on each side of the shank.

In assembling, it is only necessary' to-insert the curved pivot portion of the tongue beneath the transverse pivot bar, then 'insert the spring in position Y shaft.

Vextends in a line an inwardly movable tongue guard extending between the ears and having a curved portion which extends lbeneath and partly surrounds the transverse ba-r, "said tongue also havin curveddownwardl exltending guard projections which straddle theshank and bear against portions of the upstanding ears, said shank andsaidtongue I guard provided with spring holding means,

l tongue guard l and a coiled spring interposed between the and the shank and engaging the spring holding means, said tongue guard end of the press the free end of the tongue downwardly and thenV twist the` hook portion to alined position'with ther and spring. being lockedfto the shank by the hook portion being positioned in the path of removal movement of the tongue.

2. A snap hook, comprising a 'shank having a hook portion and upstanding opposite ears connected together by a transverse bar, the forward edges of said ears being curved concentrically with relation tothe transverse bar, an inwardly movable tongue guard extending between the ears and pivotally engaging the transverse bar and having offset portions which engage'V the curved edges of the ears, the forwardend portion of the tongue engaging the end of thehook portion, and a spring interp'osedbetween l theV tongue guard and the shank.

l3. A. snap hook, comprisinga shank having a hook portion'and upstanding opposite ears connected together vby a transverse bar, the forward edges of saidears being curved concentrically ywith relation' to the transverse 'bar, an inwardly movable tongue guard extending between the earsfand having'a curved `rear portion whi'clipartly surrounds the transverse bar andan 'offset portionwhich engages the'curved edgesrof the "ears, the forward end portionof said tongue engaging the hook end, said tongue and shank having spring'holding means,4 and a coiled spring interposed between the'shank land the tongue and engagingf the holding 'means 15A snapili'ook, comprisiriga shank'having a 'hook portion provid'ed'with a recess at its end,'said shank onits opposite" sides also having upstanding earsof ,wreater width than the' shank connected together by a transverse bar and also having aspring refcess between the" ears, they Vforwardv edgev iper- 'tions vofsaid ears being'curvedy 'concentrically with relationto the transverse bar,

`an 'inwardly movable tongue' guard extending between the ears and having alc'urved c rear Vportionv which partly surrounds the lower portion of thetransverse bar and also having offset curved portions which lengage the Vcurved edges of the ears, theforward end portion of the tongue entering thereycess of thehook end, saidtongue also provided with a projecting springholding p0rftion, 'and a coiled spring extendinglinto the recess of the shank and engaging' the projection of the' tongue.

5. A snap hook, comprising a shankhaving a hook portion provided'with a`k recess at 'its end,'said shank on its oppositesides also having upstanding ears of greaterwidth thanI the shank and connected togetherby a' transverse bar and alsoihavinga 'spring recess between the ears, the forward edge "portions `of said ears' being `curved concentrica'lly with relation to the transverse/bar,

an inwardlyimovable tongue guard extendingbetween the ears andhavi'ng a curved rear portion which vpartly surrounds the l lower portion of the transverse bar and and a coiled spring extending into the recess 10 also having downwardly extending portions of the shank and engaging the holding prowhich straddle the shank, the rear edge porjection of the tongue.

tions of the downwardly extending portions In testimony whereof, I affix my signabeing curved and bearing against the curved ture, in presence of two witnesses.

edges of the upstanding ears and the for- FRANK E. SCHARTOVV.. ward end of the tongue entering the recess Witnesses:

of the hook end, said tongue also provided HENRY J. VAN BEEK,

,with a projecting spring holding portion, CLAIR P. NoURsE.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. 

